Aminopropyl-grafted various silica mesostructures for adsorption of molybdenum ions from Re-containing effluent

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• 作者：Weijun Shan ; Qing Zhang ; Yanning Shu ; Wei Wang ; Hongqiang Ru ; Ying Xiong
• 关键词：Adsorption ; Separation ; Molybdenum ; Mesoporous silica
• 刊名：Adsorption
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：22
• 期：7
• 页码：859-869
• 全文大小：979 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Surfaces and Interfaces and Thin Films
  Industrial Chemistry and Chemical Engineering
  Engineering Thermodynamics and Transport Phenomena
  
• 出版者：Springer Netherlands
• ISSN：1572-8757
• 卷排序：22

文摘

Four different silica mesostructures, SBA-15 with mesopore size (8.5 nm), SBA-15 with mesopore size (10.3 nm), mesocellular foam (MCF) with uniform cell size (33.2 nm), and MCF with bimodal mesoporosity, were grafted with aminopropyl groups and used for selective recovery of Mo(VI) from Re(VII)-containing effluent. Adsorption isotherms and mechanism of Mo(VI) adsorption on these materials were studied. The adsorbed complexes of Mo(VI) could be formed by ion exchange process or/and by chelation reaction. This study shows a new approach for fractional recovery and separation of Mo(VI) from Re(VII) by using amino-modified SBA-15-type mesoporous silica.